AFCEN P355QH1 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: France / AFCEN

Data updates

Latest Update: 2025-08
Total number of updates: 1
Update History

This material has 102 properties — only a subset is shown here.

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AFCEN P355QH1 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
0.020 – 0.050
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
B
VALUE
≤ 0.0005
UNIT
%
CAS NUMBER
7440-42-8
CRITERIA
C
VALUE
≤ 0.18
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Ceq
VALUE
val1
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UNIT
%
CAS NUMBER
CRITERIA
Cr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
val1
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UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Nb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-03-1
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
Sn
VALUE
val1
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UNIT
%
CAS NUMBER
7440-31-5
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2
CRITERIA
Zr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-67-7

M 1126: RCC-M II: 2024 / Fine grain steel die forged elbows, type P355NH or P355QH1 class 1

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AFCEN P355QH1 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 102 properties — only a subset is shown here.

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AFCEN P355QH1 Heat Treatments

  • Nominal austenitizing temperature: 860°C - 920°C
    Holding time: minimum 1 minute per mm
    Water quenching
    Tempering temperature:
    - 620°C - 670°C in general
    - 640°C - 670°C in the case of a welded forged part when assembled with low-alloy steel.
    Cooling conditions: still air (outside the furnace floor, in an area and on a support provided for this purpose)
  • Nominal austenitizing temperature: 860°C - 920°C
    Holding time: minimum 1 minute per mm
    Water quenching
    Tempering temperature:
    - 620°C - 670°C in general
    - 640°C - 670°C in the case of a welded forged part when assembled with low-alloy steel.
    Cooling conditions: still air (outside the furnace floor, in an area and on a support provided for this purpose)

AFCEN P355QH1 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
490 — 600 MPa
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Elongation, A
val1
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%
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Yield Strength, Rp0.2
val1
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MPa
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Impact Energy
val1
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J
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  • -Cross References
  • 54Composition
  • 42Mechanical Properties
  • 3Physical Properties
  • 3Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
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